baber/WOPTO huggingface dataset:
Patent GB-396117-A (GB)
Title: Improvements in and relating to the voltage regulation of hot cathode rectifiers
IPC: H02M7/06
Filed: 1932-02-04
Abstract: 396,117. Transformers ; rectifying alternating current. BRITISH THOMSON-HOUSTON CO., Ltd.; Crown House, Aldwych, London.-(Assignees of Cheeseman, R. T. ; 11, Beach Road, Lynn, Massachusetts, U.S.A.) Feb. 4, 1932, No. 3387. Convention date, Feb. 4, 1931. [Class 38 (ii).] In a rectifier arrangement for battery charging, hot cathode tubes 14 are connected to a tapped auto-transformer 12 either singly or for full wave rectification, the D.C. output voltage being regulated by altering a tapping 21 on the transformer by means of a plug connection between contacts 18, 22. In order to obtain voltages intermediate the tapping voltages a part 20 of the secondary 17 of the filament heating transformer is connected in series with the A.C. connection to the tube by inserting the plug in sockets formed by a bar 19 and contacts 22. A switch 10 controls the A.C. supply from leads 5, 6 to the transformer and the negative D.C. terminals 7, 9 are connected through chokes 23 and ammeters 11 to the anodes of the rectifier valves, a common positive terminal 8 being connected through the switch 10 to the mid-point of the transformer. A bank 13 is provided with tappings on the main transformer to which the A.C. mains supply may be selectively connected through the lead 6 in accordance with the voltage thereof. Tap voltage increments in the output of the rectifier may correspond to the voltage of one battery and intermediate voltages used to alter the charging rate.
Patent GB-543532-A (GB)
Title: An improved method and apparatus for electric welding
IPC: B23K9/32
Filed: 1941-03-14
Abstract: 543.532. Uniting by fusion. LINDE AIR PRODUCTS CO. March 14. 1941. No. 3484. Convention date, June 20. 1940. [Class 83 (iv)] In electric fusion welding by passing a current between the work and a fusible electrode having its end inserted into a mass of granular fusible mineral material, a column of this material is maintained above the welding puddle and surrounds the electrode so as to force the fused slag to flow radially outwards. Overheating of the electrode above the welding zone due to the tendency of the molten slag to build up around the electrode is thus avoided. An apparatus for making a rivet weld at C comprises a cylindrical casing D having an apertured horizontal plate 14 to which is secured a conical hopper 18 and an inner apertured cylindrical member 12, the plate 14 being spaced above the work so as to allow the molten slag S formed by melting the granular material to be pushed out radially by the column of granular material G which is continually supplied to the hopper. The member 12 is provided with a cap having a guide hole for the metal electrode E or an elongated slot so that the electrode may also be manipulated laterally of the weld. In a line welding apparatus the casing D is replaced by a pair of plates 52 provided with horizontal plates 56 and inclined hopper plates 60 and a pair of apertured members 54 on which may be secured a slotted horizontal plate to guide the electrode along the welding groove. Specification 433,723 is referred to.
Patent GB-851292-A (GB)
Title: Improvements in or relating to trigger and like circuits
Inventor: ROBERTS FREDERIC FRANCIS
IPC: H03K3/42
Filed: 1957-02-01
Abstract: 851,292. Automatic exchange systems. POSTMASTER GENERAL. Jan. 3, 1958 [Feb. 1, 1957], No. 3617/57.Class 40 (4). [Also in Groups XL (b) and XL (c)] In a circuit for feeding speech or tone from a vertical lead I to another horizontal lead 0, the signal is applied to the emitter circuit of a photo-transistor PT and is fed out from the collector lead over a second transformer, or vice versa. A negative-going pulse applied to the base of photo-transistor PT causes it to conduct and collector current flows through the lamp or electro-luminescent device L which illuminates the photo-transistor and maintains it in the conducing state. A positive-going pulse applied to terminal CO cuts off transistor PT, thereby disconnecting the terminals I, 0. A number of trigger circuits are also described (see Group XL (c)).
Patent GB-261956-A (GB)
Title: Improvements in blank holding means for presses for drawing sheet metal and the like
IPC: B21D24/14
Filed: 1926-02-09
Abstract: 261,956. Fitzpatrick, H. D., (Marquette Tool & Manufacturing Co..) Feb. 9, 1926. Cupping. - A press for drawing sheet metal &c. has a crank-operated ram 12 and a blank-holder 15 which is independently actuated by fluid pressure. The blank-holder is secured to a member 14 carried by one or more rods 29 which pass loosely through the ram and are connected to cvlinders 17. A stationary piston 22 mounted on a rod 19 secured to a stationary member 10 is provided for each cylinder 17, the rods 19 also carrying stationary cylinders 18 in which the cylinders 17 may reciprocate. The cylinders 17, 18 are in permanent communication through a port 23 in the piston-rod. Fluid under pressure is delivered to the cylinders at the commencement of the working stroke of the press through a valve 33 which may be automatically controlled. After the drawing operation, the valve is rotated to place the cylinders in communication with the atmosphere through a pipe 35. A vent 27 is provided for the space between the upper end of the cylinder 17 and the piston 22. In a modification, cylinders 44. Fig. 3, are secured to the ram 12 and reciprocate upon a stationary rod 51, the rods 19 carrying the blank-holder being coupled to pistons 62 within the cylinders 44. Provision is made for actuating the valves 33 independently or for so setting them that the flow of fluid to and from the cylinders may be controlled by a single valve.
Patent GB-207490-A (GB)
Title: Improvements in and relating to dental apparatus
IPC: A61C19/00
Filed: 1923-02-07
Abstract: 207,490. Pieper, O. H., and Pieper, A. F. Nov. 21, 1922, [Convention date]. Dental and like engines; stands, trays, and the like.-An equipment stand comprises a central hollow column 10, Figs. 1 and 6, branching out at the top into three hollow bracket arms 13, 14, 15 moulded or formed integral with the column, and arranged preferably in a plane, one arm 13 for a motor 27, one 14 for a tray or lamp, and the third 15 for a cuspidor; the leads and fluid supply pipes are disposed within the arms. A curved bracket 18, carrying the motor and an engine 28. is pivoted on the arm 13. An arm 17, pivotally mounted on a hollow sleeve or post 16 on the arm 13, has a hollow trunnion 19 on which an arm 20 supporting a rotatable instrument tray 22 is pivoted. The trunnion 19 is extended to form a support for a Bunsen burner 24, and is eonnected through flexible tubing 25 with a valve 26, the gas supply pipe 65 passing inside the arm 13 and column 10. The arm 14 has a hollow sleeve or post 31, Fig. 3, on which is pivoted an equipment tray 33 carrying a spray bottle 37 provided with a flexible tube 39 connected with a valve 40 and extending inside the arm 14 to an air supply pipe 66. An instrument tray 43 is carried by an arm 42 pivoted to an arm 41, which, in turn, is pivoted to the sleeve 31. and carries a socket and plug connection and a conduit 50 for a lamp 51, the leads passing through the arm 41 and column 10. The arm 41 may be omitted and the end of the sleeve covered with a cap; or the trays 33, 43 may be omitted. The cuspidor 57 is carried on a head 56, rotatably mounted on the arm 15 by means of a nut 55, and discharges through an elbow joint 54 into a waste pipe 58<a>. A hollow arm 58 on the head 56 carries a holder 59 for a drinking-glass, and a waste basin 61 which discharges through the arm 58. A water pipe 59a for the cuspidor and for a faucet 60 is pivotally connected with a valve 62, and is supplied through a pipe 63 within the arm 15 and column. A conductor 68 is connected with foot control means for the motor.
Patent GB-686184-A (GB)
Title: Inhibition of corrosion of cargo tanks of marine vessels
IPC: C23G1/16
Filed: 1950-02-14
Abstract: For cleaning and inhibiting corrosion of cargo tanks of marine vessels containing residues of water-insoluble liquid cargoes, the internal surfaces of the tanks are treated with an alkaline solution containing 0.003-10 per cent of an inorganic nitrite, e.g. by spraying.  The solution is separated from impurities dislodged or removed from the tank, e.g. by settling or centrifuging, and used for further treatment of such tanks. Nitrites of sodium, potassium, lithium, caesium, calcium, barium and strontium may be used and the solution may be rendered alkaline, e.g. to produce a pH of 8-12, by the addition of sodium, potassium or ammonium hydroxides, lime, sodium carbonate, potassium phosphate, borax or sodium acetate. Specifications 581,341, [Group XVIII], and 625,340, are referred to.ALSO:A method of cleaning and inhibiting corrosion of cargo tanks of marine vessels containing residues of water-insoluble liquid cargoes, comprises treating the internal surfaces of the tanks with an alkaline solution containing 0.003-10 per cent of an inorganic nitrite, e.g. by spraying, separating the solution from impurities dislodged or removed from the tank, e.g. by settling or centrifuging, and recovering the solution for further treatment of such tanks. Nitrites of sodium, potassium, lithium, caesium, calcium, barium and strontium may be used and the solution may be rendered alkaline, e.g. to produce a pH of 8-12, by the addition of sodium, potassium or ammonium hydroxides, lime, sodium carbonate, potassium phosphate, borax or sodium acetate. Specifications 581,341, [Group XVIII], and 625,340 [Group III], are referred to.
Patent GB-305485-A (GB)
Title: Improvements in fibre cleaning machine
IPC: D01B1/30
Filed: 1929-02-04
Abstract: 305,485. Fabricord, Inc., (Assignees of Gardner, F. P.). Feb. 4, 1928, [Convention date]. Breaking and scutching apparatus.-A machine for treating hemp, flax, jute, &c., which can be adjusted to produce line fibre or tow from green or retted and dried material comprises a series of blades 17 - - 20 against which the fibre is scutched by blades 29 on a rotary drum 27. The blades 17 - - 20 are individually adjustable in a frame and are separated by interchangeable distance pieces 23. The frame is adjustable towards the drum by screws 24. The blades 29 are set in slots in the drum 27 and are arranged in groups, in which the space between the blades is filled to the level of the bevels. Between the groups are wider and deeper spaces. The material is fed by rollers 12 - - 16, 26 to the drum and the treated material is gripped between a pair of vertically running chains 41, 42 carrying wooden or metal slats. The slats are staggered and the chains run at the same speeds. The chain 41 is turned horizontally and co-operates with another chain 49 running more quickly to clean and polish the fibres. The parts are driven by chain and sprocket gearing from the shaft of the drum 27. The machine may be mounted on wheels or runners.
Patent GB-1332284-A (GB)
Title: Electrical rectifiers
IPC: H01L21/48
Filed: 1972-01-26
Abstract: 1332284 Semi-conductor diodes SIEMENS AG 26 Jan 1972 [26 Jan 1971] 3754/72 Heading H1K An overvoltage limiter selenium diode is contained in a housing 1 comprising interacting cup shaped metal parts 2, 3 between which is positioned a resilient insulant ring 4 of e.g. acetal polymer defining a central cavity in which a laminar selenium rectifier element is located between base 6 of part 3 and a conductive plate 7 engaged by a spring 8 bearing against a depressed base 9 of part 2. The rim 11 of the latter presses ring 4 against base 6 with clearance from walls 12 of part 3, to define therebetween a space filled e.g. with sealing epoxy resin. The rim is flanged to engage a recess of ring 4 which is located by indentations of walls 12, and the rectifier is connected between the housing parts; which have respective strap and plug terminals 16, 18. Stacks of plural elements of aiding or opposing polarities may be used, and the cups may be of quadrangular shape.
Patent GB-475179-A (GB)
Title: Improvements in or relating to the combustion chambers of four stroke cycle internal combustion engines
IPC: F02B75/02
Filed: 1936-02-07
Abstract: 475,179. Oil engines. BUCHI, A. Feb. 7, 1936, No. 3758. Void. Convention date, Feb. 9, 1935. [Class 7 (iii)] In a four - stroke engine in which there is overlap of exhaust and admission periods, the air charge is whirled in a heart or pear shaped combustion chamber 6 by baffles 8 on either the piston face or the cylinder head. The baffles are adjacent both the inlet and the exhaust valves.
Patent GB-1423732-A (GB)
Title: Pressure control apparatus and method
IPC: B01J19/00
Filed: 1973-01-25
Abstract: 1423732 Automatic control of pressure TEXACO DEVELOPMENT CORP 25 Jan 1973 3768/73 Heading G3R In a catalytic reforming unit for producing hydrogen, the pressure in a separator 1 is maintained at a substantially minimum pressure to provide economical operation. Gas drawn from the separator is split into two streams, one through a feed pre-treater reactor 20 and product separator 30, and the other through an absorber 10, the hydrogen outputs of the two streams being combined at 34. The pressure at 34 is measured by a transducer 50 and the signal PH is summed in 52 with a minimum differential pressure signal P 1  from a source 58 to produce a signal PA from which is subtracted at 53 a signal representing pressure Pp in separator 1, the output being fed to a comparator 61. Similarly, a signal PR representing the input pressure to reactor 20 is summed at 63 with a further minimum differential pressure signal P 2  from source 58, and a signal representing the output pressure PD of a compressor 7 is subtracted in 67, and this output is fed to comparator 61. The greater of the outputs from 53,67 passes to an integrator 71 via a switch 60 or 60A, and is added at 72 to a pre-set signal V3 from source 58, the resultant signal E 12  controlling the set point in a pressure controller 38 and thus the pressure in separator 1. In an alternative embodiment, (Fig. 2 (not shown), the signals are converted to digital signals and fed into a computer to produce an error signal is converted to analogue set point signal for controller 38.
Patent GB-1523704-A (GB)
Title: Process for the manufacture of linear polyesters which contain phosphites and/or phosphates
IPC: C08G63/87
Filed: 1977-01-31
Abstract: 1523704 Preparing high molecular weight polyesters CIBA-GEIGY AG 31 Jan 1977 [2 Feb 1976] 3808/77 Heading C3R Polyesters are prepared by reacting a linear polyester precondensate having a degree of poly-condensation of at least 50 in the presence of, as catalyst, from 1 to 25% by weight, based on the precondensate, of a phosphate or phosphite ester until a degree of polycondensation of at least 100 is reached. The examples describe preparing polyethylene terephthalate and polybutylene terephthalate, optionally with minor mol. per cent of another diol or diacid, polyethylene isophthalate and polybutylene isophthalate using triphenyl phosphate, triphenyl phosphite or tris(nonyl)phosphite.
Patent GB-607519-A (GB)
Title: Improvements in driving arrangements for spinning and twisting machines
IPC: D01H1/241
Filed: 1946-02-07
Abstract: 607,519. Spindle driving arrangements. BOYD, Ltd., J. & T., and BOYD, H. A. Feb. 7, 1946, No. 3831. [Class 120(ii)] The invention is described as an improvement in the driving arrangements for textile spinning, twisting and like machines disclosed in Specification 575,878, wherein spindles are driven by secondary tapes from intermediate pulleys movable axially and laterally to remove the tapes from the pulleys to non-rotary collars. According to the present invention, the secondary tapes are brought to an immediate stop by tensioning them against the non-rotary collars. An intermediate pulley 23 is raised by a hook 27 on a weighted lever 25 when the catch 6<SP>1</SP> of a rod 6 is moved from a detent. An arm 28 of the lever 25 abuts against an extension 29 on a swinging bracket 21 supporting the pulley 23 so as to swing the pulley 23 towards the spindle 3 simultaneously with its rising movement, thus slackening the secondary tape 2A. The extension 29 is so shaped that when a non-rotary collar 24 is raised adjacent to the tape 2 A the bracket 21 is allowed to swing back, under tension of theprimary driving tape 2, to tension the secondary tape 2 A against the non- rotary collar 24, stopping the spindle promptly.
Patent GB-555839-A (GB)
Title: Improvements in and relating to the manufacture of buttons and the like
IPC: B28B1/00
Filed: 1942-03-24
Abstract: 555,839. Moulding buttons and other small articles from ceramic materials. ALTHAM COLLIERY CO. (1924), Ltd., (trading as ACCRINGTON BRICK & TILE CO.), and ROBINSON, J. S. March 24, 1942, No. 3877. [Class 87 (ii)] [Also in Groups VII, XV and XXIII] The ceramic material is ground fine, water is added as a binder, the mass is dried, granulated and moulded in a press, and the moulded articles are fired in a kiln. In the case of brick-making materials such as clay or shale, the firing temperature is the ordinary temperature used in firing bricks, and in the case of fusible materials such as felspar or ground glass, the firing temperature is such as will produce surface fusion. Gum arabic or sodium silicate may be added to the initial finely-ground mass, to preserve agglomeration after drying. A lubricant such as paraffin, dry soap or wax may be added to the granulated mass, to improve the capacity for flow. When brickmaking materials are used, a glaze-forming material may be added before pressing or applied as a coating after pressing, or a volatile glaze may be added to the kiln, and substances may be added to the mass which lower the vitrifying temperature thereof. When fusible materials are used, a substance may be added to vary the refractive index of the baked article and thus modify its opacity. Colour may be added to the baked or unbaked article, and a lacquer or varnish to the baked article. The colour may be applied in a rotating " barrel." Befcre finishing, the articles may be tumbled or barrelled to remove roughnesses by contact with each other. For light-coloured buttons, a white-burning clay may be used. Other articles which may be made are wheels for model aeroplanes and for other toys and counters for games.
Patent GB-802311-A (GB)
Title: Manually operable valves
Inventor: GRETTON-LOWE REGINALD
IPC: F16K27/06
Filed: 1956-02-09
Abstract: 802,311. Locking nuts. GASKELL & CHAMBERS, Ltd. Feb. 1, 1957 Feb. 9, 1956], No. 4049/56. Class 89(1) [Also in Group XXIX] In a manually-operable valve, the rotatable-plug 4 is held against its seating by a nut 8 engaging a screw-threaded truncated conical extension 7 of the plug, the outer end of the rut being formed with a transverse-slot 10, the nut being deformed so as to close or partially close the slot prior to engagement with the extension 7.
Patent GB-1495094-A (GB)
Title: Stackable containers
IPC: B65D21/04
Filed: 1976-02-02
Abstract: 1495094 Stackable trays PINCKNEY MOLDED PLASTICS Inc 2 Feb 1976 [29 Sept 1975] 04055/76 Heading B8P A moulded tray of polyethylene or polypropylene has feet 21 on the base which can be engaged with rails 40, 50 or 70 to enable one tray to be stacked at any one of three levels in another tray, the trays being engageable by a sliding action. The feet and rails have complementary formations-such as 45, Fig. 17-to prevent movement of the stacked trays and when a tray 9 is stacked at the highest level projections 80 from its rear wall engage slots 83 in the rear wall of the lower tray. Projections and cut-outs 52, 58, 64, 74 also ensure secure stacking at lower levels. In the embodiment shown in Fig. 29 a pull-out drawer 100 is provided in the bottom of the tray. Inwardly extending ribs 112 on the tray side walls prevent the tray lifting up and retainers 114 are also provided. A tapered projection on a front wall 125 of the drawer engages a surface 127 on the tray bottom to hold the drawer securely in position and prevent sagging under the weight of the contents.
Patent GB-547531-A (GB)
Title: Improvements in or relating to means for positioning freight containers on vehicles
IPC: B60P7/13
Filed: 1941-03-26
Abstract: 547,531. Vehicles with removable bodies; stays for hinged articles. NATIONAL FITCH CORPORATION. March 26, 1941, No. 4064. Convention date, April 15, 1940. [Classes .103 (iv) and 108 (i)] [Also in Group XXV] In a device for positioning a removable container or body on a vehicle, such as described in Specification 485,962 and comprising a positioning member on the vehicle platform, adapted to be swung from a horizontal to a vertical operative position in which it is held by the engagement of a pivoted hook mounted on the platform with the free end of a strut pivoted to the positioning member, means are provided for limiting the upward movement of the strut and the hook to ensure the automatic engagement of these members. A series of the positioning members 10 is arranged near each longitudinal edge of the vehicle platform 35 and the container B is moved laterally on to this platform on runners on the container, the members 10 near one edge being folded down flush with the platform so that the container may be slid over them and being then raised to the vertical position shown in Fig. 4. Each positioning member comprises a plate 10 with sides 11, pivoted on a shaft 20 in the channel formed by the flanges 31 of a pair of angle members extending transversely to the edge of the platform. A strut 41 of U-form with cross-member 42 is pivoted at 40 within the member 10, 11. A hook 50 pivoted at 20 within the limbs of the strut has lateral lugs 56 for engagement with ledges 45, 46 formed on each limb of the strut. When the member 10 is in the horizontal position the strut lies within it with the part 42 adjacent the part 14. When the member 10 is lifted the lower end of the strut slides along the base 30 of the channel into engagement with the hook 50 as shown in Fig. 4. During this movement the lugs 56 ride on the ledges 45, 46 and as upward movement of the hook is limited by engagement of the part 54..thereof with the base 30, upward movement of the end 42. of the strut is correspondingly limited. Upward swinging movement of the strut about its pivot 40 to such an extent as would prevent engagement of the end 42 with the hook and which might otherwise be caused by vigorous upward movement of the member 10 is thus prevented. The hook is retained in the engaged position by a dog 61 pivoted to the strut at 62 and which may be locked by a wire with a seal 71, passed through openings in the dog and strut. The member 10 is provided with a recess 17 at each side for engagement with projections on the container B whereby longitudinal movement of the container as well as lateral movement is prevented by the members.